Re: [Help-gsl] example C file compile flags

[Alan Mead]

Robin Hankin wrote:
> Frank Reininghaus wrote:
> > Hi,
> >
> > 2009/1/9 Robin Hankin <address@hidden <mailto:address@hidden>>
> >
> >     address@hidden:~> gcc -I/usr/local/include f.c
> >
> >     What are the correct flags here?
> >
> >
> > try
> >
> > gcc f.c -lgsl -lgslcblas -lm
>
> Thanks Frank, it works!
>
> Now, could we add that piece of wisdom to the manual *just where it's 
> needed*?  The

Robin,

I'm also new to GSL.  I think you are selling the GSL manual short:

http://www.gnu.org/software/gsl/manual/html_node/Compiling-and-Linking.html
http://www.gnu.org/software/gsl/manual/html_node/Linking-programs-with-the-library.html
http://www.gnu.org/software/gsl/manual/html_node/Linking-with-an-alternative-BLAS-library.html

... I think you will want to ensure that you understand the 
rammifications of '-lgslcblas'...

You may possibly also find the below helpful (these flags work for for 
me on Fedora 9, YMMV).  The first is a simple shell script and the 
second is the Makefile from the below helpful, but now somewhat out of 
date, page from Darren Wilkenson.  (Wilkenson's page has a more detailed 
example regarding matrices and if that's of interest, I have modified it 
to compile with recent versions of GSL.) 

http://www.mas.ncl.ac.uk/~ndjw1/teaching/sim/gsl.html

-Alan

address@hidden examples]$ more compile
#!/bin/sh
echo Attempting to compile $1.c into executable $1...
gcc -Wall -Wextra -lgsl -lgslcblas $1.c -o $1

address@hidden examples]$ more Makefile
# Makefile for building C stuff with GSL

#CFLAGS=-I/usr/include/gsl
CFLAGS=-Wall -Wextra -g -ansi -pedantic
LDFLAGS=-lgsl -lgslcblas
CC=gcc

%: %.c
   $(CC) $(CFLAGS) $(LDFLAGS) $< -o $@

# eg. do "make gsl_test" to make gsl_test from gsl_test.c
# then run with "gsl_test 10"

clean:
   rm -f *~ *.o core a.out


--
Alan D. Mead, Ph.D. Assistant Professor, Institute of Psychology
Scientific Adviser, Center for Research and Service
Illinois Institute of Technology
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